Winsor & Newton Water Colour Medium, Ox Gall Liquid is a wetting agent used to improve flow when mixed directly with watercolors. It can also be used on very hard sized papers to reduce surface tension. Add 3-4 drops per cup of water.
Details:
75 ml (2.5 fl. oz.)
Wetting agent used to improve flow
lié au Winsor & Newton® Watercolor Medium, Ox Gall Liquid
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